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US 4,728,914 AGranted
Rating plug enclosure for molded case circuit breakers
AssigneeGeneral Electric Company
InventorsRobert A. Morris, Paul T. Rajotte, LeeAnne Wambolt
Life of this patent
Estimating the term…
Abstract
A molded plastic rating plug enclosure houses the molded case circuit breaker rating plug printed circuit board. The rating plug enclosure is inserted within the circuit breaker cover and is adapted for removal from the circuit breaker cover by means of a special extractor tool. Access means for connecting a test jack with the circuit breaker trip unit printed circuit board and visual access means for an indicating diode are formed within the cover of the rating plug enclosure.
Claims16
A circuit interrupter comprising:
- an operating mechanism connected with a pair of separable contacts arranged for separating the contacts upon occurrence of an overload condition through the contacts;
- an electromagnetic actuator connected with an electronic trip circuit and arranged proximate the operating mechanism said actuator including means for articulating the operating mechanism upon receipt of an actuating signal from said electronic trip circuit;
- an insulative circuit interrupter case and a removable cover surrounding said operating mechanism and said actuator, said interrupter cover including recess means formed therein;
- a rating plug enclosure including a case and a removable cover housing a rating plug circuit, said circuit including at least one rating resistor, said rating plug case including electrical access means through which electrical interconnection of said rating resistor with said electronic trip circuit, said rating plug enclosure being inserted within said recess means;
- and a pair of detent means formed on opposing outer surfaces of said opposing sides of said rating plug case, said detent means being captured under ledges formed within said recess, said rating plug cover includes a pair of slots aligned with and arranged over said detent means, said slots providing insertion access for a removal tool.
2 more elements
A rating plug for circuit interrupters comprising:
- a molded plastic case and removable cover;
- a rating plug circuit with means for adjusting the rating of a molded case circuit interrupter, said circuit being mounted on a printed circuit board within said case and cover;
- an extension on one side of said cover incuding a plurality of elongated ventilation slots;
- a pair of retainer slots integrally formed on interior surfaces of opposing sides of said case slidingly receiving said printed circuit board;
- a pair of detents integrally formed on exterior surfaces of said opposing sides of said case outboard said interior slots and cooperating with a circuit interrupter cover and holding said rating plug case within said circuit interrupter cover, said removable cover including a pair of slots through outer edges of said removable cover aligned with an over said detents and providing access to a bifurcated tool for removing said rating plug case from said circuit interrupter cover.
2 more elements
Dependencies are inferred from the claim text.